Vehicle spring suspension



H. W. HYDE. VEHJCLE SPRING SUSP APPUCATION mm APR.

ENSION.

Patented Aug. 15, 1916.

HENRY WEBB HYDE, OF BOSTON, MASSACHUSETTS.

VEHICLE SPRING SUSPENSION.

Specification of Letters Patent.

Ffn'tented Aug. 33330.;

Application filed April 24, 1915. Serial 1%. 93,117.

To all whom it may concern Be it known that I, HENRY \Vnnn HYDE, a citizen of the United States, residing at Boston, county ofSuiYollg State of Massachusetts, have invented a certain new and useful Improvement in Vehicle Spring Suspension, of which the following is a specification, reference being bad therein to the accom 'mnying drawings.

My invention relates to an improvement in spring suspensionfor use in conneetion with motor vehicles orthe like and has for its object a construction and arrangement such that road shocks in a large degree a c not transmitted to the body but to an independent load which is particularly designed to receive them.

A further object of-my invention is to arrange the device so. that any cumulative vibrations of the body or frame of the vehicle are broken up and neutralized. To effect this end, I provide a spring a part of which supports the body and frame, and a part of which supports a load whichfis capable'of vibrating independently of the body and framef The arrangement of the body, spring and independent load is such that the tendency of theiudependent load to vibrate greater than the tendency of the body to vibrate," due to the fact that the pressure exerted by the spring more readily overcomes the inertia of the independent load than the inertia of the body. In. this man nor a spring suspension is provided which a sorbs the greater part of road shocks and reduces the. body vibrations to a minimum.

My invention will be fully understood when takenzin connection with the accompanying drawings and the novel features thereof will be pointed out and clearly defined in the claims at the close of this specification.

In the drawings. Figure 1 is a side elevation showing a portion of the r-ear end of an automobile provided with a device embodying my invention. Fig. is a rear view of the vehicle as, shown in Fig. 1. Fig. 3 is :1 view similar to Fig. 2 showing a modified fornrof device embodying my iu\'cution llaving reference to the drawings there is shown at 10 the rear end of the frame of a motor vehicle which is adapted to support any common form of body 11 and which for convenience will be treated as a part of the body. At 12 is shown the wheel. at 13 the axle, at 14 the fuel tank and at 15 the tires with the end of the springs 16.

-. in any-well which may be seeinknown manner.. A spring member i of nsuaiform is eecured to the axle 13 by means of eoi-- and. :1V pair of ciips 18. The co'ilar preferably so arranged that it may pivot about the axle l3. Whiiz: I have shown one form of means for securing the spring it'rto the axle 13, I do not wish to limit myseii' to the particular means shown for any known form of connection may he empk One end of the spring 10 is pivot-- nected to a log; 19 secured to and the other end of the sprin ally connected to a spring is in turn pivotally conni spring 21 fixed at to t spring construction do both sides of the frame ii) as shown Fig. 2. e

The fuel tank 14 may be of any I well known shape or construction and is pier-idenat each end with a'lii ,Hhich fora *a shackle bolt for connecting the shaekiee 2G The iugs 23 are preferably arranged slightly above the center of the tank 14 so that the tank and tires will be supported substantially in a vertical position as shown. In this manner the tank is pivotally hung at its ends on the rear end of each of the spriirs' 15 at each side of the frame as is cleariy shown in the drawings. In order that the tank Hand tires 15 will not swing about the pivotsflfi. I provide a bracket 30 which secured to each side of the frame as shown in Figs. 5. and 9.. and connect the said brackets 30 with each cud of the tank 14 by link. 31 pivotally connected to the tank at and to the oracle cts at 33. Fuel transmitted from the tank H by a flexible pipe 9 oi any common form. The tank may be rigidly secured to each of 'the springs 16 if desired or pivotally hung on the springs in any other well known mannor. my OlIJGCt being to suspend the tank on the springs 16 so that it may move 1ndependcntly of the body and frame. It will be )ad on necessary to sustain one half of the rear axle. The spring weight, and the or independent load on the point -23 is .three difference between the weight of that portion of the-body resting at 16 and. the weight of that portion of the independent load, represented by the tank Hand tires 15, resting at 23 on the end of the springlfi. For example, if the load on the point 19 is five hundred pounds in weight of the tank and tires hundred pounds, the spring 21 is. adapted for a load of two' hundred pounds. Fol.low-.

ing outthi's example, the front portion of th'espring l6 exerts a pressure of five hundred pounds against the frame 11, and the rear portion of the spring 16 exerts a pres sure of five hundred pounds against the tank '14: and against the spring 21. When at rest, therefore, the parts are in balance. theaxlemoves up, however, owing to an unevenness in. the road, the, movement of the axle is transmitted through spring 16 as an upward-pressure. The upward pressure of the spring 16 is resisted at one end by the independent load by body and at the other end by thedndepend- 'ent load and spring 21.

The amount of movement imparted to the body and to the i the upper pressure of the spring. 16 is dependentupon the resistanceto movement offered by' the body and by the independent load. Owing to the well known principle thatt'he inertia of a weight increases as the acceleration increases the re-- ancelto' the pressure'exerted by each end *ing' .16 will be materially different, for at no end of the spring the resistance to movenint'isientirely that of the inertia of therbody, while at the other end of the spring,

' the resistance to movement consists of the '.'ment of the independent load the resistance to aceelcrationfof and consequently g'iyen;;int erv al' of time.

inertia of the. independent weight 14 and '15 and of the pressure of the spring 21. Due tothe fact that the resistanceof a Spring does not vary with itsa'cceleration, the hide pendent'weightend of the spring 16 is al' ways less than that of the body endof the with the axle. 13 as a fulcrum. If the. axle '13- is raised and the acceleration is such that the resistance offered by the independajlly' less-than the resistance otlered by the bodyjeiid of the spring 16 the mor nt of thebody Will be less than the mover. cut it ent -weightend-of the spring .16 is mater normally would have when mounted on both .ends of the spring in the usual manner bu an :imountwhich is substantially equal to the amount of movement of the independent 19 on the spring body, therefore, will be relatively small even hen d hung on the springs 16 and is is materially,

weight greater than is normally the case, In other wordsa quick vibration of the axle will be transmitted in marked degree to the independent load andin relatively slight degree of the body. The vibrations of the when the axle is subjected to excessive road shocks. Furthermore, the lever action of the spring 16 referred to above will operate to break up the vibrations which the body is subjected to and to consequently reduce the body motion to a minimum. This is due to the fact that the greater vibrations of the independent weight are non-synchronous with the lesser vibrations of'the body so that the independent weight for example is coming down before the body starts. to come own, and when the body does come down it is met by an increased pressure on the forward end of the spring 16 due to the. momentum of the independent weight at the other end of the spring." In this manner the vibrations of the body are quickly'broken up. Fig. 3 of the drawings shows a modified form' of spring suspension embodyingmy invention. In this device the springs 16 are mounted on the axle 13 as described above in connection with Figs. 1 and 2. A platform spring ll, of usual form and of the same relative strength asthe springs 21 is connected to the rear engls'of the springs 16 by shackles 42'and to the frame 10 by a member 44. The fuel 'tank 14 is mounted beneath. the platform spring 41 on lugs 45, the outer ends of which are adapted tofbe received through the 'shacklesfLQ and'form shackle bolts by \jkl'iiclr'thg shackles 42 are connected with the springs '16. The tank 14; is in this case preferably rectangular. in shape, and supports the tires 1'5.--'6n.brackets 46 as'-shown. The tank 14 is thus pivotally capable of i'noving relatively to the body being preferal'ily -conuected therewith by a link connect; ing means similar to that shown in Fig. 1.' 1 0 Thus the plat form spring is a modified fond of spring 21 described above and acts in the sainc way.

I do not wish to limitmyself to the par? ticular constructions shown for it will be obvious that the type of springs and their arrangement may be varied withoutdeparting from the spirit of my invention.

\Vhat I claim is: I

1. In a device of the'character described, the combination of'a body, an axle, a plurality of springs supporting said body on said axle and a weight secured -.to said springs at an intermediate point between said body and said axle, said weight being free to move independently of said body and" axle.

In a device of the character described, the combination of a body, an axle, a weight m vable relatively to said body and axle, a 1

spring on said axle which supports said body. at one side of said axle and supports said weight at the other side of said axle, said parts being arranged to cause said weight to have greater vibrations than said body, and a second spring connecting said llody to said weight.

3. In a device of the character described, the combination of a body, a weightn'iounted to move relatively to the body, a spring supporting both said weight and said body, a support for said spring, and a second spring supported by said first spring and connected with said body.

l. In a device of the character described, the combination of a body, a weight mounted to move relatively to the said body, a pair of springs at the junction of which said weight is located, both of said springs being connected with the body and the weight, and a support for one of said springs.

5.In a device of the character described, a body, an axle, a spring resting on said axle and supporting said body at one end,

a weight mounted to be capable of movement relatively to said body and resting on the opposite end of said spring from that on which said body rests, and a second spring connecting said weight to said body.

6. In a device of the character described, the combination of a body, an axle, a weight mounted to move independently oi said link which is pivotally connected to said 7 weight and to said body.

7. In a device of the character described, the combination of a body, an axle, a spring on each side of said body resting on said axle and connected with said body at one end, a weight having a pivotal connection at each end with the opposite end of each of said springs to that to which said body is connected, and a second spring connecting said weight to said body.

8. In a device of the character described, an axle, a spring on said axle, a body mount ed on one end of said spring, an independent weight mounted on the other end of said spring, said weight being less than that of the body, and a second spring connecting said weight to said body which is adapted normally to exert a pressure equal to the dili'erence between the weight of the body and that of the independent weight.

In testimony whereof I aflix my signature, in presence of two witnesses.

HENRY WEBB HYDE.

Witnesses:

(TAnnnoN MACLEOD, Amen H. MoinnsoN. 

